<h3>1 描述</h3>
<p>服务生成方式生成的实例tipInstance 可以通过tipInstance.destroy()销毁</p>
<h3>2 示例</h3>
<h4>2.1 tip实例 destroy()方法</h4>
<br />
<br />
<button #targetButton tiButton>target button</button>
<button (click)="addTip($event,targetButton)" tiButton>click me add tip to target</button>
<button (click)="removeTip($event)" tiButton>click me destory tip from target</button>
